Biomass Production and Lodging Resistance in 'Leaf Star', a New Long-Culm Rice Forage Cultivar
Biomass Production and Lodging Resistance in 'Leaf Star', a New Long-Culm Rice Forage Cultivar
复制标题
DOI：
10.1626/pps.13.58
复制
发表时间：
2010-01-01
影响因子：
2.5
通讯作者：
Hirasawa, Tadashi
中科院分区：
文献类型：
--
作者：
Ookawa, Taiichiro;Yasuda, Kenichi;Hirasawa, Tadashi
通过与亲本和最近改良的饲用稻品种进行比较，对采用精确的抗倒伏性评价方法开发的新长秆饲用品种“叶星”的生物量产量和抗倒伏性进行了评估。叶星的地上部分生物量产量高于其亲本，其秸秆产量为13 t ha(-1)。由于截面模量大、弯曲应力高，叶星的基部节间断裂时的弯矩是越光的三倍。叶星地上部分的生物量生产与其他饲料品种没有显着差异。然而，叶星的秸秆产量是所有饲料品种中最高的。叶星在稻草中积累了大量的淀粉。由于截面模数较大，基部节间的弯矩在饲料品种中最高。结果表明，通过抗倒伏相关性状的精准评价方法，可以将秆粗、秆刚度等抗倒伏相关性状引入长秆品种中。结果还表明，Leaf Star 具有较大的生物量和较高的质量，适合饲料和生物燃料生产。
Biomass production and lodging resistance in the new long-culm forage cultivar 'Leaf Star', developed using a precise evaluation method for lodging resistance, were evaluated by comparing these properties with those of its parents and recently improved forage rice cultivars. Leaf Star had a higher biomass production of above-ground parts than its parents, and its straw yield was 13 t ha(-1). The bending moment of the basal internode at breaking in Leaf Star was three times higher than that in Koshihikari, owing to a large section modulus and a high bending stress. Biomass production of above-ground parts of Leaf Star did not differ significantly from that of other forage cultivars. However, Leaf Star had the highest straw yield of all forage cultivars. Leaf Star accumulated a large amount of starch in straw. Bending moment of the basal internode was the highest among forage cultivars owing to a large section modulus. These results show that the traits related to lodging resistance such as cum thickness and culm stiffness could be introduced into long-culm cultivars by using the precise evaluation method for the traits related to lodging resistance. The results also show that Leaf Star has a large biomass and high quality, which are suitable properties for feed and biofuel production.